A security network in PSI photoprotection: regulation of photosynthetic control, NPQ and O(2) photoreduction by cyclic electron flow

Cyclic electron flow (CEF) around PSI regulates acceptor-side limitations and has multiple functions in the green alga, Chlamydomonas reinhardtii. Here we draw on recent and historic literature and concentrate on its role in Photosystem I (PSI) photoprotection, outlining causes and consequences of d...

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Autores principales: Chaux, Frédéric, Peltier, Gilles, Johnson, Xenie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2015
Materias:
Plant Science
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4606052/
https://www.ncbi.nlm.nih.gov/pubmed/26528325
http://dx.doi.org/10.3389/fpls.2015.00875
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author Chaux, Frédéric
Peltier, Gilles
Johnson, Xenie
author_facet Chaux, Frédéric
Peltier, Gilles
Johnson, Xenie
author_sort Chaux, Frédéric
collection PubMed
description Cyclic electron flow (CEF) around PSI regulates acceptor-side limitations and has multiple functions in the green alga, Chlamydomonas reinhardtii. Here we draw on recent and historic literature and concentrate on its role in Photosystem I (PSI) photoprotection, outlining causes and consequences of damage to PSI and CEF’s role as an avoidance mechanism. We outline two functions of CEF in PSI photoprotection that are both linked to luminal acidification: firstly, its action on Photosystem II with non-photochemical quenching and photosynthetic control and secondly, its action in poising the stroma to overcome acceptor-side limitation by rebalancing NADPH and ATP ratios for carbon fixation.
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spelling pubmed-46060522015-11-02 A security network in PSI photoprotection: regulation of photosynthetic control, NPQ and O(2) photoreduction by cyclic electron flow Chaux, Frédéric Peltier, Gilles Johnson, Xenie Front Plant Sci Plant Science Cyclic electron flow (CEF) around PSI regulates acceptor-side limitations and has multiple functions in the green alga, Chlamydomonas reinhardtii. Here we draw on recent and historic literature and concentrate on its role in Photosystem I (PSI) photoprotection, outlining causes and consequences of damage to PSI and CEF’s role as an avoidance mechanism. We outline two functions of CEF in PSI photoprotection that are both linked to luminal acidification: firstly, its action on Photosystem II with non-photochemical quenching and photosynthetic control and secondly, its action in poising the stroma to overcome acceptor-side limitation by rebalancing NADPH and ATP ratios for carbon fixation. Frontiers Media S.A. 2015-10-15 /pmc/articles/PMC4606052/ /pubmed/26528325 http://dx.doi.org/10.3389/fpls.2015.00875 Text en Copyright © 2015 Chaux, Peltier and Johnson. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Chaux, Frédéric
Peltier, Gilles
Johnson, Xenie
A security network in PSI photoprotection: regulation of photosynthetic control, NPQ and O(2) photoreduction by cyclic electron flow
title A security network in PSI photoprotection: regulation of photosynthetic control, NPQ and O(2) photoreduction by cyclic electron flow
title_full A security network in PSI photoprotection: regulation of photosynthetic control, NPQ and O(2) photoreduction by cyclic electron flow
title_fullStr A security network in PSI photoprotection: regulation of photosynthetic control, NPQ and O(2) photoreduction by cyclic electron flow
title_full_unstemmed A security network in PSI photoprotection: regulation of photosynthetic control, NPQ and O(2) photoreduction by cyclic electron flow
title_short A security network in PSI photoprotection: regulation of photosynthetic control, NPQ and O(2) photoreduction by cyclic electron flow
title_sort security network in psi photoprotection: regulation of photosynthetic control, npq and o(2) photoreduction by cyclic electron flow
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4606052/
https://www.ncbi.nlm.nih.gov/pubmed/26528325
http://dx.doi.org/10.3389/fpls.2015.00875
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